{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:44:41.299771", "data_source": "ERA5", "website": "http://wexa.jamstec.go.jp", "Author": "Patrick Martineau"}, "event_id": {"name": "Event ID", "description": "A unique identifier based on: beginning_date, end_date, longitude, and latitude", "value": "2010-May-22_to_2010-May-24_25.5_29.5"}, "event_label": {"name": "Event label", "description": "Integer-valued grid identifier that uniquely labels each detected extreme event in space and time, consistent with the corresponding labels stored in the NetCDF dataset.", "value": 2010050000670}, "status": {"name": "Status", "description": "An ongoing event denotes an event that lasts up to the latest data available. These events are subject to change as newer data is added.", "value": false}, "start_date": {"name": "Start date", "description": "First date on which grid points are under the influence of an event", "value": "May 22 2010"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "May 24 2010"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 3}, "figures_available": {"name": "Figures available", "description": "True if figures were pre-generated for this event", "value": true}, "detection_var": {"name": "Detection variable", "description": "Variable used for the detection scheme", "value": "t2m"}, "event_type": {"name": "Event type", "description": "Type of the event detected", "value": "Cold spell"}, "area": {"name": "Area", "description": "The area (in square meters) encompassing all grid points under the influence of an event during its lifetime.", "value": 59585.284496579}, "countries_affected": {"name": "Countries affected", "description": "The ArcGIS geocoding API (https://developers.arcgis.com/rest/geocode/) is used to obtain a list of all the countries affected by an event during its lifetime.", "value": ["Egypt"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Mediterranean", "Sahara"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Africa"]}, "oceans_affected": {"name": "Ocean basins affected", "description": "The ArcGIS geocoding API (https://developers.arcgis.com/rest/geocode/) is used to obtain a list of all the ocean basins affected by an event during its lifetime.", "value": []}, "center_lat": {"name": "Center latitude", "description": "Latitude of the maximum time-integrated standardized t2m anomalies. Only t2m of the same polarity as the events are considered (positive T2m for a HW, for instance). The centre is thus representative of both the severity and persistence of anomalies.", "value": 29.5}, "center_lon": {"name": "Center longitude", "description": "Longitude of the maximum time-integrated standardized t2m anomalies. Only t2m of the same polarity as the events are considered (positive T2m for a HW, for instance). The centre is thus representative of both the severity and persistence of anomalies.", "value": 25.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "25.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 25.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 27.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 26.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 30.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2010-05-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[24.97, 30.03], [25.32, 30.18], [25.35, 30.25], [25.25, 30.5], [25.47, 31.03], [26.0, 31.25], [26.25, 31.15], [26.5, 31.25], [27.03, 31.03], [27.25, 30.5], [27.15, 30.25], [27.18, 30.18], [27.53, 30.03], [27.75, 29.5], [27.65, 29.25], [27.75, 29.0], [27.65, 28.75], [27.68, 28.68], [28.03, 28.53], [28.25, 28.0], [28.15, 27.75], [28.25, 27.5], [28.03, 26.97], [27.68, 26.82], [27.53, 26.47], [27.0, 26.25], [26.75, 26.35], [26.5, 26.25], [25.97, 26.47], [25.75, 27.0], [25.96, 27.5], [25.82, 27.82], [25.47, 27.97], [25.32, 28.32], [24.97, 28.47], [24.75, 29.0], [24.85, 29.25], [24.75, 29.5], [24.97, 30.03]]]]}, "2010-05-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[24.97, 30.03], [25.32, 30.18], [25.35, 30.25], [25.25, 30.5], [25.47, 31.03], [26.0, 31.25], [26.25, 31.15], [26.5, 31.25], [27.03, 31.03], [27.25, 30.5], [27.15, 30.25], [27.18, 30.18], [27.53, 30.03], [27.75, 29.5], [27.65, 29.25], [27.75, 29.0], [27.65, 28.75], [27.68, 28.68], [28.03, 28.53], [28.25, 28.0], [28.15, 27.75], [28.25, 27.5], [28.03, 26.97], [27.68, 26.82], [27.53, 26.47], [27.0, 26.25], [26.75, 26.35], [26.5, 26.25], [25.97, 26.47], [25.75, 27.0], [25.96, 27.5], [25.82, 27.82], [25.47, 27.97], [25.32, 28.32], [24.97, 28.47], [24.75, 29.0], [24.85, 29.25], [24.75, 29.5], [24.97, 30.03]]]]}, "2010-05-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[24.97, 30.03], [25.32, 30.18], [25.35, 30.25], [25.25, 30.5], [25.47, 31.03], [26.0, 31.25], [26.25, 31.15], [26.5, 31.25], [27.03, 31.03], [27.25, 30.5], [27.15, 30.25], [27.18, 30.18], [27.53, 30.03], [27.75, 29.5], [27.65, 29.25], [27.75, 29.0], [27.65, 28.75], [27.68, 28.68], [28.03, 28.53], [28.25, 28.0], [28.15, 27.75], [28.25, 27.5], [28.03, 26.97], [27.68, 26.82], [27.53, 26.47], [27.0, 26.25], [26.75, 26.35], [26.5, 26.25], [25.97, 26.47], [25.75, 27.0], [25.96, 27.5], [25.82, 27.82], [25.47, 27.97], [25.32, 28.32], [24.97, 28.47], [24.75, 29.0], [24.85, 29.25], [24.75, 29.5], [24.97, 30.03]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -5.403338789166014}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -4.026834659489336}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [22.69171267790847, 22.031480642179872, 23.378673936903738]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [20.3934825352311, 19.658222940330404, 20.633626145218102]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-3.9246428412634073, -4.690887054208025, -3.4649740829965765]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-4.748412705685666, -5.403338789166014, -3.8977122061559157]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.3406311913901117, -1.6534840391009027, -1.2331666660233394]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.617939713373636, -1.8430461983816169, -1.3131610621339103]}}